Enter valuation type

What causes this issue?

The material is subject to
<DS:GLOS.3526C0D2AFAB52B9E10000009B38F974>split valuation</>, but you
have not chosen a <DS:GLOS.3526C0D3AFAB52B9E10000009B38F974>valuation
type</>.

System Response

The system can only post the document if you have assigned the quantity
to a valuation type.

How to fix this error?

Enter a valuation type.
If you do not know the valuation type, use the
<DS:GLOS.3526B36DAFAB52B9E10000009B38F974>possible entries</> function
to view a list of the existing valuation types for the material.

Error message extract from SAP system. Copyright SAP SE.